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SECURITY REPORT · EXTENSHI SCAN

NexusScan - Advanced URL Security Scanner

Firefox extension·by Sunil Upadhyay
77
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.

Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue

How it ranks

NexusScan - Advanced URL Security Scanner's safety score vs every other extension we've scanned
Globally
17%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 415,885 extensions
In Privacy & Security
18%of privacy & security extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 12,625 privacy & security extensions
Findings
94
median 11Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
8
median 4Declared in manifest
Active users
6
median 3vs category median

Findings breakdown

Automated security signal · 94 distinct issues across 6 severities
94
distinct issues
detected

Permissions requested

2 risky permissions of 8 total
1 critical permission require attention
This extension requests 8 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites

Can read and modify content on every website you visit

High
View open tabs

Can see URLs and titles of all open tabs

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Access bookmarks

Can read and modify your saved bookmarks

Medium
Add context menu items

Can add custom items to the right-click context menu

Medium
Show notifications

Can display desktop notifications outside the browser

Low
Block network requests (declarative)

Can block or redirect network requests using predefined rules without seeing content

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Scan performed by extenshi.io · Oct 22, 2026
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